Because the program was created using an old C++ Builder and Installation software,
it does require some additional steps. The only databases that are up to date will be the ARC's. This version does not support the other RV groups. 
1. Run the program  ARCnetcall.msi .
2. Organization ---- mrg2
3.  Serial number : 123 456
4. The program can be excuted by clicking on the exe file using the File explorer.
"c:\program files(x86) \ mrg2 \ arcnetcall\ arcnetcall.exe
5. You can create a short cut here also.
4. Password is " WB5MRG "